2000 character limit reached
Bragg solitons in topological Floquet insulators (2004.03740v1)
Published 7 Apr 2020 in physics.optics and nlin.PS
Abstract: We consider a topological Floquet insulator consisting of two honeycomb arrays of identical waveguides having opposite helicities. The interface between the arrays supports two distinct topological edge states, which can be resonantly coupled by additional weak longitudinal refractive index modulation with a period larger than the helix period. In the presence of Kerr nonlinearity, such coupled edge states enable topological Bragg solitons. Theory and examples of such solitons are presented.